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Siemens HJX3B350 - Molded Case 350A 3-Pole 600V (Thermal Magnetic)

Siemens
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Siemens HJX3B350 Circuit Breaker - Molded Case 350A 3-Pole 600V (Thermal Magnetic) The Siemens HJX3B350 is a 3-pole molded case circuit breaker from the VL Series, designed to provide LI (Long-Time and Instantaneous) thermal magnetic overcurrent protection for low-voltage industrial power distribution systems. It is rated for 350 amps continuous current at 600 volts AC, 50/60 Hz, with a high interrupting capacity of 65 kA at 480V and 35 kA at 600V, ensuring robust fault clearing in demanding environments. The unit features a bolt-on connection type for secure installation in panelboards and enclosures, weighs 45 lb, and is built on a JG Frame size without included lugs. This breaker complies with UL 489 and IEC 60947-2 safety standards, making it suitable for protecting feeders, motors, and branch circuits in heavy industrial applications.

Key Features & Specifications
  • Manufacturer: Siemens
  • Part Number: HJX3B350
  • Series: VL Series
  • Type: HJX
  • Item Subcategory: Molded Case
  • Poles: 3
  • Phase: 3
  • Current Rating: 350A
  • Voltage Rating: 600V AC
  • Frequency: 50/60 Hz
  • Interrupting Capacity: 65 kA at 480V, 35 kA at 600V
  • Connection Type: Bolt-On
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: JG Frame
  • Weight: 45 lb
  • Certifications: UL 489, IEC 60947-2


Product Identification
  • UPC: 078364360897
  • GTIN: 00783643608979